Sig Sauer P322, Semi-automatic, Single Action Only, Polymer Frame Pistol, Full Size, 22 LR, 4 Threaded Barrel with 1/2X28 Adapter, Anodized Finish, Black, Adjustable Fiber Optic Sights, Optic Ready, ROMEO RS Compact, 20 Rounds, 2 Magazines 322C-B-RS The P322 was completely designed and built by SIG SAUER in New Hampshire and is loaded with premium features, including a Romeo RS Compact Optic. The P322 also comes with a threaded barrel adapter making it suppressor ready right out of the box, and with its ambidextrous controls, interchangeable flat and curved triggers, and fiber optic front and rear sights the new P322 is the highest capacity, most advanced 22 pistol in its class.